I have 1080_50i footage and I want to render it in 50i using NV Encoder setting field order upperfield (I noticed that it is the best quality) becasue I realized that it is so much faster rendering with GPU. After selecting Magix AVC Internet 1080p 25 FPS NV Encoder and setting upper field I get an error saying: An error occured while creating the media file... Error 0x80660008 (message missing). When setting it to progressive it renders but the motions are so blurry. Before that I render using SonyAVC settings but I can't find the option to use the GPU in that setting. Do you guys have any idea how to resolve it?